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<title>Problem 2240. -- ural1676  Mortal Combat -- 衡阳八中OJ离线版-2012-02-29</title><center><h2>2240: ural1676  Mortal Combat</h2><span class=green>Time Limit: </span>10 Sec&nbsp;&nbsp;<span class=green>Memory Limit: </span>128 MB<br><span class=green>Submit: </span>2&nbsp;&nbsp;<span class=green>Solved: </span>2<br>[<a href='submitpage.php?id=2240'>Submit</a>][<a href='problemstatus.php?id=2240'>Status</a>][<a href='bbs.php?id=2240'>Discuss</a>]</center><h2>Description</h2><div class=content><div><span style="font-size: 14pt">&nbsp;&nbsp;&nbsp; </span><span style="font-size: 14pt">在某戈壁上，</span><span style="font-size: 14pt">n</span><span style="font-size: 14pt">只羊驼和</span><span style="font-size: 14pt">m</span><span style="font-size: 14pt">只河谐进行了一场戈壁保卫战。根据战争的规则，每只河蟹必须和一只羊驼战斗（不同的河蟹和不同的羊驼战斗）。只要有一只河蟹赢了，戈壁就会被河蟹占领。但是，羊驼可以决定参加战斗的羊驼和战斗的顺序。</span></div>
<div style="text-indent: 7pt"><span style="font-size: 14pt">&nbsp;&nbsp; </span><span style="font-size: 14pt">为了保卫戈壁，羊驼必须赢下这场比赛。而每只羊驼和每只河蟹战斗会产生的胜负关系是已知的。</span></div>
<div style="text-indent: 20.4pt"><span style="font-size: 14pt">你的任务是，判断哪一对羊驼和河蟹一定不能进行战斗。</span></div>
<div>&nbsp;</div></div><h2>Input</h2><div class=content><div style="text-indent: 20.4pt"><span style="font-size: 14pt">第一行为两个正整数</span><span style="font-size: 14pt">n</span><span style="font-size: 14pt">、</span><span style="font-size: 14pt">m</span><span style="font-size: 14pt">，下面</span><span style="font-size: 14pt">n</span><span style="font-size: 14pt">行，每行</span><span style="font-size: 14pt">m</span><span style="font-size: 14pt">个字符给出了一个矩阵</span><span style="font-size: 14pt">A</span><span style="font-size: 14pt">，</span><span style="font-size: 14pt">A</span><span style="font-size: 14pt">ij</span><span style="font-size: 14pt">=1</span><span style="font-size: 14pt">如果第</span><span style="font-size: 14pt">j</span><span style="font-size: 14pt">只羊驼能打败第</span><span style="font-size: 14pt">i</span><span style="font-size: 14pt">只河蟹。</span></div>
<div>&nbsp;</div></div><h2>Output</h2><div class=content><div style="text-indent: 20.4pt"><span style="font-size: 14pt">输出一个</span><span style="font-size: 14pt">n</span><span style="font-size: 14pt">行</span><span style="font-size: 14pt">m</span><span style="font-size: 14pt">列的矩阵</span><span style="font-size: 14pt">B</span><span style="font-size: 14pt">。</span><span style="font-size: 14pt">B</span><span style="font-size: 14pt">ij</span><span style="font-size: 14pt">=1</span><span style="font-size: 14pt">如果第</span><span style="font-size: 14pt">i</span><span style="font-size: 14pt">只河蟹不能和第</span><span style="font-size: 14pt">j</span><span style="font-size: 14pt">只羊驼战斗。</span></div></div><h2>Sample Input</h2>
			<div class=content><span class=sampledata>4 4<br />
1111<br />
1000<br />
1111<br />
1111<br />
</span></div><h2>Sample Output</h2>
			<div class=content><span class=sampledata>1000<br />
0111<br />
1000<br />
1000<br />
</span></div><h2>HINT</h2>
			<div class=content><p></p></div><h2>Source</h2>
			<div class=content><p><a href='problemset.html?search='></a></p></div><center>[<a href='submitpage.php?id=2240'>Submit</a>][<a href='problemstatus.php?id=2240'>Status</a>][<a href='bbs.php?id=2240'>Discuss</a>]</center>﻿<br>

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